My point is there is no actual need, and all needs are contrived by policy for policy's sake, usually caused by security nerds (my people) whose rationale is identity because identity, and then we index on geeking out on writing security protocols without product use cases for the people subject to it.
The real problems in identity proofing are things like task delegation, substitute decision makers in elder care, parents doing things on behalf of their kids and kids asserting their parents permission, federation of user attributes with privacy, etc. These aren't difficult technical problems, except you need some way to transfer risk and accountability, which is an absolute quagmire. Universal digital identity (because let's face it, that's what it necessarily is) approaches these problems with a necessary component of a solution, but that's not what it's mainly going to be used for.
Maybe this yields a thought experiment where let's say I write an app for parents and kids where kids can use it to show they have their parents permission to be in a park after dark, walk to school by themselves, participation in a class trip, travel by themselves on a train or plane, get consent for emergency medical procedures, etc. Then that kid grows up and it switches from their parents to being a drivers license, age of majority card, school graduation certificates, their last STD test, list of employers and past salaries, speeding tickets, criminal records, lowest rated tweets, sexual partners etc. Sounds like it could be a real product right? Except that kid never wanted the stupid app that monitors them, the hovering parents who imposed it on them just use them as a source of narcisistic supply, and then their entire life is one of being subject to some proxy for these helicopter parents. The app is capitivity, or more accurately, entry into a panopticon that deprives them of their basic humanity. This is why digital identity is a terrible idea in pretty much every version I've seen so far. It's not chosen, it's imposed, and that's not a product, that's a mandate laundered through tech.